Reactions of (N-phenylsalicylideneiminato)aluminium(III)di(μ -isopropoxo)di (isopropoxo) aluminium(III) with simple and internally functionallized oximes. Molecular structure of the penta-coordinated complex (2-acetylthiophenyloximato)bis(N-phenylsalicylideneiminato)aluminium(III)

Article abstract of DOI:10.1016/S0277-5387(03)00454-6

Reactions of bis(N-phenylsalicylideneiminato)aluminium(III)di(μ -isopropoxo)di(isopropoxo) aluminium(III), [C₆H₄O{CH= N(C₆H₅)}]₂Al(μ-OPrⁱ) ₂Al(OPrⁱ)₂ (1) with simple and internally functionallized oximes in 1:1 and 1:2 molar ratios in refluxing anhydrous benzene yield binuclear complexes of the type, [C₆H ₄O{CH=N(C₆H₅)}]₂Al(μ-OPr ⁱ)₂Al(ON=CRR′)(OPrⁱ) and [C ₆H₄O{CH=N(C₆H₅)}] ₂Al(μ-OPrⁱ)₂Al(ON=CRR′)2 [where R=R′=CH₃; R=CH₃, R′=C₄H ₃S-2, C₄H₃O-2 and C₅H ₄N-2], respectively containing aluminium(III) atoms in six- and four-coordination sites. All these binuclear complexes are characterised by elemental analysis, molecular weight measurements and spectroscopy [IR and NMR(¹H, ¹³C and ²⁷Al)]. Reaction of bis(N-phenylsalicylideneiminato)(isopropoxo)aluminium(III) with 2-acetylthiophenyloxime in 1:1 molar ratio in refluxing anhydrous benzene, yields a novel heteroleptic compound, [C₆H₄O{CH=N(C ₆H₅)}]₂Al{ON=C(CH₃)C ₄H₃S-2} (10). The crystal structure of [C ₆H₄O{CH=N(C₆H₅)}] ₂Al{ON=C(CH₃)C₄H₃S-2}·CH ₂Cl₂ shows five-coordination around the aluminium(III) atom.